[Farcol] Introduce

Use the Falcor Router to create a Virtual JSON resource. In this tutorial we will use Falcor’s express middleware to serve the Virtual JSON resource on an application server at the URL /model.json. We will also host a static web page on the same server which retrieves data from the Virtual JSON resource.

index.js:

// index.js
var falcorExpress = require('falcor-express');
var Router = require('falcor-router');

var express = require('express');
var app = express();

app.use('/model.json', falcorExpress.dataSourceRoute(function (req, res) {
    // create a Virtual JSON resource with single key ("greeting")
    return new Router([
        {
            // match a request for the key "greeting"
            route: "greeting",
            // respond with a PathValue with the value of "Hello World."
            get: function() {
                return {path:["greeting"], value: "Hello World"};
            }
        }
    ]);
}));

// serve static files from current directory
app.use(express.static(__dirname + '/'));

var server = app.listen(3030);

index.html:

<!-- index.html -->
<html>
<head>
    <!-- Do _not_  rely on this URL in production. Use only during development.  -->
    <script src="//netflix.github.io/falcor/build/falcor.browser.js"></script>
    <script>
        var model = new falcor.Model({source: new falcor.HttpDataSource('/model.json') });

        // retrieve the "greeting" key from the root of the Virtual JSON resource
        model.
        get("greeting").
        then(function(response) {
            document.write(response.json.greeting);
        });
    </script>
</head>
<body>
</body>
</html>